問題: What difficulties do people often face when travelling?

A big problem with traveling is the surprise expenses. You can easily spend more than planned, because of extra costs like baggage fees or changing money. Even if you have a budget, it's hard to stick to it with tourist attractions and activities that you didn't plan for.

One major challenge when travelling is definitely the unexpected costs. It's easy to go over budget, especially with hidden fees like extra baggage charges or currency exchange rates. Even with a well-planned budget, spending can spiral out of control with tempting tourist traps and unplanned activities.

動詞片語：“超支” 使用動詞片語來描述超出預算的情況，使句子更直接和明確。 過去分詞作定語：“隱藏費用” 使用過去分詞作定語來形容費用的類型，增加了句子的描述性和詳細性。 不定式片語：“開銷可能失控” 使用不定式片語來描述開支可能失控的情況，強調了潛在的風險和後果。

A common problem is the crowds at tourist spots and long lines. Famous places are often too crowded, especially in high season, which can make the visit less fun. It's frustrating and tiring to wait in line for a long time to see a well-known place or attraction.

In my view, a common difficulty is dealing with overcrowded attractions and long queues. Popular sites can be packed, especially during peak seasons, leading to a less enjoyable experience. Waiting in line for hours just to see a famous landmark or attraction can be quite frustrating and exhausting.

動名詞短語："處理擁擠的景點" 使用動名詞短語作主語，描述旅行中的一個常見難題，增加了句子的動態性。 被動語態："可以被擁擠" 使用被動語態來描述景點的拥挤状态，强调了景點的狀況而非旅行者的行為。 現在分詞作定語："排隊等候數小時" 使用現在分詞作定語來描述長時間等待的情況，增加了句子的描述性和細節。